diff --git a/src/BulletDynamics/Featherstone/btMultiBodyConstraintSolver.h b/src/BulletDynamics/Featherstone/btMultiBodyConstraintSolver.h
index 99b344e29..54ddcbfd0 100644
--- a/src/BulletDynamics/Featherstone/btMultiBodyConstraintSolver.h
+++ b/src/BulletDynamics/Featherstone/btMultiBodyConstraintSolver.h
@@ -47,7 +47,7 @@ protected:
 	btScalar resolveSingleConstraintRowGeneric(const btMultiBodySolverConstraint& c);
 	
 	//solve 2 friction directions and clamp against the implicit friction cone
-	btScalar resolveConeFrictionConstraintRows(const btMultiBodySolverConstraint& cA, const btMultiBodySolverConstraint& cB);
+	btScalar resolveConeFrictionConstraintRows(const btMultiBodySolverConstraint& cA1, const btMultiBodySolverConstraint& cB);
 	
 
 	void convertContacts(btPersistentManifold** manifoldPtr,int numManifolds, const btContactSolverInfo& infoGlobal);